Similarly, the US embassy in Nigeria has asked its citizens to be security conscious and “remain aware of your surroundings”.

The advisory read: “The US Mission urges all US citizens to exercise caution in and around shopping centers, malls, markets, hotels, places of worship, restaurants, bars, and other places where crowds gather in and around the Federal Capital Territory (FCT), from now through the Christmas and New Year’s holiday season.

“Terrorist groups have threatened to conduct bombings and attacks in this area during this period.”